Arm for dental chair



FIG. 1 is a perspective view of an arm for dental chair.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a left side elevational view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showings of an arm pad, arm hub portion and dental chair form no part of the claimed design. 

CLAIM We claim the ornamental design for an arm for a dental chair, as shown and described. 